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svtkingkobra
New User
Oct 23, 2012, 12:27 PM
Post #1 of 7
(1927 views)
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i bought a 2002 dodge neon with a 2.0 sohc ,the engine was no good so i went and bought a motor at a junkyard i installed the motor connected eveeything grounds i reconected the computer and it tured on then it would shut off i tried a couple if times and then the it died no crank i connected a wire from the starter to my battery and it will crank but my injectors dont open there is no power i checked them with a noid light .i thought it was the ecu so i webt n got another ecu n it slso did the same think cranked turen on then shut off and then no crank im lost dont know if my ecu went bad again or what help !!!
(This post was edited by svtkingkobra on Oct 23, 2012, 1:08 PM)
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nickwarner
Veteran
/ Moderator
Oct 23, 2012, 1:48 PM
Post #2 of 7
(1895 views)
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Re: 02 dodge neon
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You may very well have replaced a perfectly good ECU. The only way to condemn an ECU is to systematically test and rule out everything else. Are all your fuses good and have power? Will a scanner communicate with this ECU? If so, what codes are present? Does this ECU have a theft protection system? If it doesn't recognize the key it won't allow startup. Does the ASD relay power up with the key on? There are a lot of things to check first, and throiwing ECU's at this isn't going to do anything but drain your wallet. If the ECU was actually fried its important to determine why, so the next one also doesn't get fried.
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svtkingkobra
New User
Oct 23, 2012, 2:21 PM
Post #3 of 7
(1886 views)
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Re: 02 dodge neon
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yes i did check the fuses n they were all good my fule pump is also good i have fule all the way through my fule rail its judt that my injectors wont open n also my starter wont start with the key i have to use a wire to crank it i dont know i did retrive some codes but they were from my throttle body n thats only becuase i had them disconnected cuase thry are working fine
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nickwarner
Veteran
/ Moderator
Oct 23, 2012, 5:06 PM
Post #4 of 7
(1878 views)
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Re: 02 dodge neon
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Is the starter relay being triggered when you hit the key? This is an integrated system with a BCM that can keep the PCM from allowing it to start. Forget the jumper wires, it needs to work as it was designed. If the modules aren't allowing this to start then you won't get spark or injector pulse no matter how many jumper wires you run. Is the ASD relay being energized when the key is in the run position? Do you have just a codescanner or does your machine have the ability to view live data?
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Hammer Time
Ultimate Carjunky
/ Moderator
Oct 23, 2012, 5:08 PM
Post #5 of 7
(1875 views)
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Re: 02 dodge neon
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Sounds like a security system issue.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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nickwarner
Veteran
/ Moderator
Oct 23, 2012, 5:10 PM
Post #6 of 7
(1870 views)
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Re: 02 dodge neon
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Thinking along the same line, trying to rule out anything else since I doubt he can access the BCM with his scan tool.
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Hammer Time
Ultimate Carjunky
/ Moderator
Oct 23, 2012, 5:13 PM
Post #7 of 7
(1861 views)
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Re: 02 dodge neon
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How about a security light?
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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